mes/scaffold/tests/a1-global-no-clobber.c
Jan Nieuwenhuizen d862f1eceb
mescc: Support --align, off by default.
* scripts/mescc.in (parse-opts): Add --align.
* module/mescc/mescc.scm (mescc:compile): Support --align, off by
default.
* module/mescc/M1.scm (infos->M1): Add #:align parameter.
(M1:merge-infos): Likewise.  Keep types.
(info->M1): Likewise.  Make alignment switchable.
* module/mescc/compile.scm (r->ident):  Do not clobber.
(ident-add): Likewise.
(clean-info): Keep types.
* module/mescc/i386/as.scm (i386:r->byte-label): New instruction.
* lib/x86-mes/x86.M1: Add instructions.
* lib/x86_64-mes/x86_64.M1: Add instructions.
* module/mescc/x86_64/as.scm (x86_64:r->byte-label,
x86_64:r->word-label, x86_64:r->long-label): New instruction.
2018-10-06 15:56:14 +02:00

43 lines
1 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libmes.h>
#if __i386__
short foo;
short bar;
#else
// more interesting test for x86_64
int foo;
int bar;
#endif
int
main ()
{
foo = -1;
if (bar)
return 1;
foo += -1;
if (bar)
return 1;
return 0;
}